A product evaluation system and a product evaluation method allow people to quickly, inexpensively, and accurately evaluate large amounts of products including those that do not have information attached in advance in the manufacturing stage. The system comprises an I/O component that functions as a product identification mechanism that identifies product type including at least one of product, product group, product brand, or product category, a characteristic acquisition mechanism that acquires characteristic information of the product, an evaluator that performs authentication and value estimations of products, and a data store that stores information related to the product. The evaluation mechanism performs authentication and value estimations of products based on characteristic information of the product acquired by the characteristic acquisition mechanism, and genuine product characteristic information, counterfeit product characteristic information, and value information and market information for each condition included in the information related to products stored in the data store.